Relibupdater 24x4.0 Fat Bike Inner Tubes 2-Pack — 32mm Schrader Valves, Durable Butyl

Relibupdater 2-Pack 24x4.0 fat bike inner tubes are durable replacement tubes with 32mm Schrader valves made to fit 24 x 3.50–24 x 4.0 fat and e-bike tires.

These tubes are built for riders who need a reliable spare or replacement for fat-tire mountain and electric bikes. Each set includes two 24x4.0 inner tubes and two CNC valve caps. The tubes use a standard 32mm Schrader valve (AV) and are compatible with a range of 24-inch fat tire widths, making them a straightforward choice when your current inner tube is damaged or you want a backup for trail use.

Will these tubes fit my 24-inch fat bike tires?

Yes — the Relibupdater 24x4.0 tubes are sized to stretch across common 24-inch fat tire widths, covering from roughly 24x3.50 through 24x4.0. Always confirm the recommended tube size printed on your current tire sidewall before buying.

• Designed for 24 x 3.50, 24 x 3.60, 24 x 3.80 and 24 x 4.0 tire widths
• Standard 24-inch diameter for fat and electric bikes
• Check tire sidewall for the exact inner tube size listing

How durable and repairable are these inner tubes?

These tubes are made with robust rubber compound to resist punctures and handle the stresses of wider fat-bike rims and lower-pressure riding. They perform like typical butyl inner tubes and can be patched with standard puncture repair kits when needed.

• Butyl-style construction for long-lasting elasticity and air retention
• Suitable for low-pressure fat-bike inflation ranges
• Compatible with common patch kits for field repairs

What valve and installation tips should I know?

Relibupdater tubes use a 32mm Schrader (AV) valve, which fits most fat-bike rims with Schrader holes and pairs with the included CNC valve caps. For easier fitting and to reduce pinch flats, add a small amount of air to the tube before inserting it into the tire.

• 32mm Schrader valve (AV) — check rim hole compatibility
• Includes two CNC valve caps for protection and a clean look
• Slight pre-inflation helps prevent twisting and pinch flats during installation

How many tubes come and what accessories are included?

This purchase contains two identical 24x4.0 inner tubes plus two aluminum CNC valve caps, giving you a complete spare set for front and rear wheels or a backup for rides. No additional tools are included, so keep a tire lever and pump on hand.

• Two 24x4.0 inner tubes in the pack
• Two CNC valve caps for Schrader valves
• Recommended: tire levers, pump and patch kit for installation and field repairs

Who is this for: These inner tubes suit fat-bike and e-fat-bike riders who need correct-sized replacements that balance durability, compatibility, and affordability. Choose Relibupdater if you want easy-fit 24-inch tubes for oversized tires, a handy two-pack for both wheels, and Schrader valves that work with common rims and pumps. Always verify the tire sidewall size to match the tube before installation.